Mainly, cornerbacks in football have chance during a game or practice to motor but safeties get opportunities as well. Defensive backs need to choose what works best for you. I know coaches have certain techniques they teach for the team but not all players are alike. Some athletes are faster, stronger, quicker, more aggressive and react a little better than others. It is up to the athlete to understand their strengths and weaknesses to choose the proper technique.
Motor coverage is important because if performed right, will slow down the receivers release and many times throw off the timing for the offense. Nothing worse than a receiver and quarterback getting in rhythm, so we should keep them from doing so. Many times a defensive back can use the motor technique to limit the numbers of routes that the defense would have to defend, because it looks a lot like press.
Below, I will talk about some of the movements needed to properly perform the technique listed below:
Motor Mirror Technique - This style of coverage requires patience and I teach the athlete to start a yard off the receivers. I prefer inside leverage unless the individuals the defensive back is covering has a tight/cut split. The initial movement when the ball is snapped, inch back with shoulders forward/down and feet underneath. With each of these techniques, your focus should be on the receivers hip. You will have to stay in front of the man until he is done with his starting release (Shakes, Slides, etc.) and let him slowly catch you. When the receiver determines which way he wants to exit, the defensive back gets in phase with the kick slide to stay on top, put your hand on the shoulder (Some say hands on hip.)
What I would like for you to remember is this, you must have good balance and good feet. Stay in control of your movements with good eye discipline. If you are in man coverage, make sure you stay with your man and finish the play. No player is perfect but give great effort